# BioCaL vs Multiply Fun

The clearest difference is in-app purchases: Multiply Fun at none against BioCaL's 1. BioCaL's advantage is update cadence (every 2 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. BioCaL sells 1 one-off in-app purchase. Multiply Fun asks for nothing beyond the download.

BioCaL ships an update every 2 days, Multiply Fun every 6 weeks. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BioCaL | Multiply Fun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 6 weeks |
| Size | 23 MB | 4 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380) | [Evergreen Soft](https://appshunter.io/developer/377347580) |

## What reviewers say

### BioCaL

[App page](https://appshunter.io/ios/app/biocal/id6476985449)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioCaL Premium Access | $4.99 | one-time |


### Multiply Fun

[App page](https://appshunter.io/ios/app/multiply-fun-19x19/id6738080498)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BioCaL free?

BioCaL is free to download, with in-app purchases available.

### Is Multiply Fun free?

Multiply Fun is free to download, with no in-app purchases.

### Do BioCaL or Multiply Fun have ads?

Neither BioCaL nor Multiply Fun shows ads.

### Which is updated more often, BioCaL or Multiply Fun?

BioCaL ships an update every 2 days, and Multiply Fun every 6 weeks. Most recently, BioCaL was updated on October 15, 2026 and Multiply Fun on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*